The M-LOK SX Series handguard from Samson is a free floating AR-15 rail system with a sleek profile and a comfortable feel. It uses a pre-installed captured clamping system to become a rock solid extension of the rifle's upper receiver. The lightweight handguard is precision machined from 6061-T6 aluminum with M-LOK attachment points at 3, 6 and 9 o'clock. It has ambidextrous QD integrated QD sling points.